Hi, Dean. Hope you're well. That Vocal Rider thing looks interesting and gives me a pile of ideas as far as envelope creation for other creative purposes (some of which relates to tracking/plotting EQ stuff to follow fundamentals or other ridiculous mayhem that is woefully off topic). As far as traditional fader riding man is that a romantic premise for me and I'd love to be able to do that skillfully but is certainly an acquired skill and in need of a decent control surface (which I don't really have aside from the piddly knobs on my Oxygen 25 and padKontrol but do intend to do some live level rides eventually with those device but more for creative effect weirdness).
Now if I could figure out a way to maybe get something like the concrete limiter to write an automation envelope that might be interesting but I'm not sure if that is possible and it would probably be more just a guideline envelope I'd attempt to recreate manually.
I agree with using my ears for this but I think what I'd like to do is do it by numbers first (basically get everything leveled to a static number) then listen back soloed then again in the mix and adjust as needed to sit well. Obviously after that as I continued mixing I could alter the envelope(s) further. Just build it up (or tear it down) as the mix progresses.
My current method of "set it and forget it" with minor alterations has been fine for my little experiments and personal mixes but it's time to move on if I ever expect to be taken seriously. Fortunately I'm obsessive enough to not mind doing it all manually but I do have my limits so a good workflow is crucial so I don't spend too much time on minutia (which I am prone to).
As far as a Wave editor I have an ancient version of Wavelab on my old DAW but can't port it over or have the money to get a new version. I'd rather snag some Izotope stuff anyway though and that's been on my "must get" list for a while. I forget exactly which bundle I was looking at but it was the more mastering oriented thingies so if it can integrate into Sonar as you have described (which I was not aware of) then all the better.
Cheers and thanks.